Mercurial > hg > nginx
changeset 6999:4925a6d13746
Configure: disabled gcc atomics with Sun C (ticket #1261).
Oracle Developer Studio 12.5 introduced GCC-compatible __sync builtins.
Unfortunately, these builtins are neither GCC-compatible (they generate
warnings when used with volatile), nor working (unexpectedly fail on
unpredictable combinations of code layout and compiler flags). As such,
the gcc builtin atomic operations configure test explicitly disabled when
compiling with Sun C.
author | Maxim Dounin <mdounin@mdounin.ru> |
---|---|
date | Mon, 15 May 2017 20:09:43 +0300 |
parents | 775f621eacae |
children | d8e8ced78e77 |
files | auto/cc/conf |
diffstat | 1 files changed, 19 insertions(+), 15 deletions(-) [+] |
line wrap: on
line diff
--- a/auto/cc/conf Mon May 15 20:09:40 2017 +0300 +++ b/auto/cc/conf Mon May 15 20:09:43 2017 +0300 @@ -178,21 +178,25 @@ fi - ngx_feature="gcc builtin atomic operations" - ngx_feature_name=NGX_HAVE_GCC_ATOMIC - ngx_feature_run=yes - ngx_feature_incs= - ngx_feature_path= - ngx_feature_libs= - ngx_feature_test="long n = 0; - if (!__sync_bool_compare_and_swap(&n, 0, 1)) - return 1; - if (__sync_fetch_and_add(&n, 1) != 1) - return 1; - if (n != 2) - return 1; - __sync_synchronize();" - . auto/feature + if [ "$NGX_CC_NAME" = "sunc" ]; then + echo "checking for gcc builtin atomic operations ... disabled" + else + ngx_feature="gcc builtin atomic operations" + ngx_feature_name=NGX_HAVE_GCC_ATOMIC + ngx_feature_run=yes + ngx_feature_incs= + ngx_feature_path= + ngx_feature_libs= + ngx_feature_test="long n = 0; + if (!__sync_bool_compare_and_swap(&n, 0, 1)) + return 1; + if (__sync_fetch_and_add(&n, 1) != 1) + return 1; + if (n != 2) + return 1; + __sync_synchronize();" + . auto/feature + fi if [ "$NGX_CC_NAME" = "ccc" ]; then